The first thing you notice about Yonex’s Power Cushion Fusion Rev is the unique asymmetric design and curved, banana-shaped lacing system. While stylish, it has a much more practical use: To provide a secure fit around the inner arch and top of the foot to better distribute pressure on the feet to lessen fatigue. While our testers weren’t blown away by the shoe’s performance, they did find it a comfortable,lightweight, sure-fitting model that felt great to wear the first time they tried them on. The Power Cushion in the midfoot along with a graphite sheet absorbs impact while transferring energy into the next step. The Flexion Upper has the right level of give, but it could have better ventilation.